Automatic stop-motion for bobbin winding machines



Jan. 24, 1933. MEYER-GAUSET AL 1,895,244

AUTOMATIC STOP MOTION FOR BOBB IN WINDING MACHINES Filed March 19 1929 Eiq l Kar/ flfeyr-'dua HZ MF SKI/RE 33,, Manna-all W i l lfl l l l l l Patented Jan. 24, 1933 UNITED STATES PATENT OFFICE KARL IEYEB-GAUS AND ALBERT SAURE, 0F BABMEN, GERMANY, ASSIGNORS '10 AMERICAN BEHBERG CORPORATION, OF NEW YORK, N. Y.

an'rom'rrc s'ror-uo'rroir ron Boinsm wnrnme mamas Application filed larch 19, 1929, Serial No. 348,174, and in Germany larch 29, 1928.

The present invention relates to'stop motions for bobbin winding machines for disconnecting the drive to the bobbin if entanlements occur in the thread in the skeins to fie wound off. The invention particularly aims at producing a device which can operate without imposing anything more than the smallest stress upon the thread. The thread in its course from the reel of the winding machine to the bobbin is deflected to one side from its normal path when entanglements occur in the skein or other obstacles are set up to the free running of the thread. Such a deflection of the thread is used for moving a feeler, such as a wire stirrup, which initiates the disconnection of the bobbin from its driving member.

According to the invention, a feeler 1 mg beside the thread at a certain distance rom the latter is employed in conjunction with an electrical disconnecting device. Such an arrangement ensures that practically speaking the thread shall not come into contact with the sto motion during normal operation of the obbin, and is therefore not in any wa damaged. Further, owing to the possibihty of keepin the mass of the feeler extremely small, t e additional tension placed on the thread during operation of the device can be kept so small that any breaks in the thread are avoided, even when working with the finest material. If smaller deflection of the path of the thread takes place, for example due to oscillations in the machine, or due to the occurrence of small entanglements' which are quickly able to clear themselves, the stop motion is not actuated. As soon, however, as the thread is deflected from its path by a more considerable entanglement occurring which is not able to clear itself without further assistance, the thread is deflected into contact with the feeler, the bobbin is rapidly disconnected from its driv ing member, and the interference, especially entanglements occurring in the thread in the skein, can be cleared by hand.

In carrying the invention into practice, the bobbin may be carried on a pivoted lever or similar structure which is arranged under the control of an electro-magnet or solenoid.

The arrangement may be such that the electro-magnet or solenoid, when energized, either withdraws the bobbin from the driving position or serves to hold it in the driving position. In the former case, a circuit arrangement is employed in which a current only flows when the stop motion comes into operation, but in the latter case a current flows through the circuit under normal operation of the machine when the stop motion is not operated. The feeler, which may conveniently be a wire stirrup or loop, may actuate the circuit of the electro-ma directly or through the interme iary of a relay. Other features of the invention will be appreciated from the appended claims and from the drawing, wherein Figure 1 illustrates diagrammatically an electro-mechanically controlled sto motion according to the invention, arrange for current only to flow when the stop motion is actuated; and

etic device Figure 2 is a slmilar view connected so that current flows under normal operation of the machine when the stop motion is not actuated.

Referring first of all to Figure 1, the thread I), in its course from the reel 0 to the bobbin f passes near to a feeler in the form of a wire stirrup or loop d which is also constructed as a circuit-controlling member ca-.

pable' of co-operating with a contact 1 to close the actuating circuit of the device. The feeler d is pivotally mounted so that it can -be turned about an axis 0. The thread b then asses around a deflecting rod e to the windmg-on bobbin f. The latter is carried upon the end of a lever g mounted to turn in a vertical plane in a bearing 2'. I n the normal running position, it rests under its own weight against one of the flan es of a driving disc k.

If the thread is de ected into the position b, for exam le, due to an entanglement occurring on t e reel a rotating in a counter clockwise direction, it comes into contact with the upper end of the feeler d, and the horizontal arm of the latter comes into con: tact with the contact Z, and in fact the feeler takes up the position shown in dotted lines at d. The result is that the circuit from the battery m through the winding of the solenoid is completed. The solenoid 0 is energized by the battery m, and since its iron core is connected with the link it to the lever g, the latter, is raised and the bobbin 7 is lifted from the driving disc is into the position shown in dotted lines at f. The lever g'is held in the position by the engagement of a catch p.

It is clear that the contact Z, instead of being in the main circuit of the solenoid 0, could be in the circuit of a relay, and that the contacts of that relay could be in the circuit of the solenoid 0.

. The same reference letters employed in Figure 1 are used for corresponding parts in Figure 2. The main difference in the device shown in Figure 2 is first of all that the lever armg carrying the bobbin f in Figure 2 is normally in .the driving position slightly inclined to the vertical so that the bobbin f would tend to fall away from the driving disc However, the solenoid 0 is normally energized asthe contact Z is normally closed,

and thus the solenoid 0 is able to hold the bobbin fin the driving position. If the threadoperates the feeler d, however, the latterm'oves into the position shown in dotted lines at d, interrupts the contact Z, de-energizesthe solenoid 0, and allows the bobbin 7 and the lever g to fall away into the dotted 'ositions f, g, so as to disengage the bobiiin fromits driving disc k. In this position, the lever grests against the stop p.

lVeclaim l 1.- A stop motion for'bobbin winding machines,"c,omprising in combination a feeler disposed at a distance from the normal path of the'thread from the reel of the machine to the bobbin during the winding operation and out of contact with the thread, a circuitcontrolling member in operative connection with said feeler, a source of electric current, a driving member for the bobbin. an electrically-operated disconnecting device for said driving member. and circuit connections between said circuit-controlling member, said source and said disconnecting device.

2. A stop motion for bobbin winding machines, comprising in combination a pivoted feeler disposed at a distance from the normal path of the thread from the reel of the machine to the-bobbin during the winding operation and out of contact with the thread, and also shaped as a circuit-controlling memher, a source of electric current, an electromagnetic device, circuit connections between said feeler, said source and said electro-magnetic device, a driving member for the bobbin, and means for interrupting the connecchines, comprising in combination alight sensitive pivoted feeler disposed with one I formed as a circuit-closing member, a source of electric current, a solenoid, circuit connections between said circuit-closing member, said source and said solenoid, a driving disc for the bobbin, and a pivoted supporting structure for the bobbin mechanically connected to the plunger of said solenoid.

4. In an apparatus for winding bobbins, a reel, a winding bobbin, electrical means for controlling the rotation of the winding bobbin, an electric circuit for supplying current to the said electrical means, and a light, sensitive feeler disposed at a distance from the normal path of the thread from the reel to the bobbin and in such a position as to contact with the thread when the latter is deflected by the rotation of the reel, said feeler being adapted to open and close the said electric circuit 5. An apparatus for automatically arresting the drawing of thread from a rotatable thread carrier, comprising means for drawing the thread from the thread carrier, an electrical means for controlling the motion of the thread drawing means, an electric circuit for supplying current to the said electrical means, and a feeler disposed at a dis tance from the normal path of the thread from the thread carrier to the thread withdrawing means and in a position to contact with the thread when the latter is deflected a specified distance from its normal path by the rotation of the thread carrier, said feeler being adapted to open and close the said electric circuit.

6. An apparatus as described in claim 4, including a driven rotor, an electromagnet actuated by a current supplied to it when the deflection of the thread moves the feeler to close the said electric circuit, and an actuator for the winding bobbin which is nor mally in contact with the driven rotor and the electromagnet.

7, An apparatus as described in claim 4,

includinga driven rotor, an electromagnet supplieds gwith a current passing through a circuit which may be opened through the do flection of the thread to contact with the feeler, and an actuator for the winding bobbin which is normally out of contact with the driven rotor and is held in contact with it by the electromagnet.

In testimony whereof we aflix our signa tures.

KARL MEYER-GAUS. ALBERT SAURE, 

